I should have read the description better. My old mat had grips on the back that held the mat in place. This one is smooth on the backside so shifted on the carpet. Purchased some double sided tape for some side areas so now it doesn’t slip.
This the best mat I have ever purchased! It did not come rolled up which made it very easy to put under my chair. Yes, my husband and both had to bring it in since it was delivered flat and of course you have to careful since you can hurt yourself on the very sharp grips on the bottom! Very well made
Mat is too soft. While sitting ia chair on the mat, the chair wheels leave divits in the mat. Getting the chair to roll out of the divits is sometimes challenging. The divits dissappear overnight but each day the process repeats. A harder, less flexible mat is prefered.